Power supplies
Each channel of the UNETTO power amplifier requires a 270W 45+45 VDC dual power supply able to deliver 3 Amp at full output power.
The next figure shows the schematic of a power supply that can be used to power a stereo version of the UNETTO power amplifier.
Power supplies building kit
If you are interested, I'm able to provide a power supply kit for the previous schematics. The kit allows to build a power supply that supports two UNETTO mono amplifier (see UNETTO PCB & Kits for more info).
The kit includes: a professional made PCB, all semiconductors and passive components, high quality/capacity filtering capacitors, mounting instructions, and shipping (excluding transformers).
UNETTO Power Supply schematics